Shaina met retired lawyer Paul Aronson on the site SeekingArrangement and brought her sister to their Oct 1 date.

The trio headed back to his luxury townhouse on East 38th Street for what he hoped was some fun.

Instead, the devious sisters allegedly zip-tied Aronson to a coffee table, swiped his cash and credit cards and went on a shopping spree.

The 85-year-old floundered for 20 hours before he was discovered by a friend.

Shaina took full responsibility for the sordid ordeal and implored cops not to get her sister in trouble, court papers show.

“She followed her sister into this scheme,” said Shalaine’s lawyer, Brian Kennedy. “But happily she comes out unscathed, with no conviction, and taking a step on a different path than her sister who may spend years in prison.”

If convicted at trial, Shalaine faced a minimum of 15 years on the top count. Her sister wasn’t offered the same generous plea deal, and her case is still pending.